Transistor Dimmer

This item is a rack-mounted dimmer. It contains two identical trailing-edge transistor dimmers within a moulded case and is interchangeable with the HES92020 Thyristor A semiconductor device used to switch or control large amounts of power using a small triggering current or voltage. The most common type is an SCR. See the entry for SCR. dimmer module for fitting into ESR dimmer cabinets.

The dimmer is for use with incandescent lamps and low voltage lamps via electronic transformers, if the transformer manufacturer approves use. With convection cooling the maximum load For example, dimmers, relay units, ballasts etc. Receives messages from control devices and performs the relevant action e.g. sets the lighting it controls to the relevant level. Some control may be possible at the device itself. Also known as Control Gear or LIU, see entries for both. is 6 A per channel A channel pertaining to a load (also known as control gear or LIU), see entry for load. A ballast has one channel, whereas a dimmer or relay unit can have numerous channels. and increases to 20 A per channel when fan cooled.

The dimmer is provided with a three-digit LED A light-emitting diode (LED) is a semiconductor device that emits incoherent monochromatic light when electrically biased in the forward direction. This effect is a form of electroluminescence. The color depends on the semiconducting material used, and can be near-ultraviolet, visible or infrared. display, normally indicating the current output level as a percentage and four push buttons for manual operation and address setting.